cn.bc.core.util.SpringUtils.java Source code

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Here is the source code for cn.bc.core.util.SpringUtils.java

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/*
 * Copyright 2010- the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.bc.core.util;

import java.lang.reflect.InvocationTargetException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.util.MethodInvoker;

import cn.bc.core.exception.CoreException;

/**
 * Spring
 * 
 * @author dragon
 * @since 1.0.0
 */
public class SpringUtils implements ApplicationContextAware {
    static Log logger = LogFactory.getLog(SpringUtils.class);
    private static ApplicationContext applicationContext;

    private SpringUtils() {
    }

    public void setApplicationContext(ApplicationContext _applicationContext) throws BeansException {
        applicationContext = _applicationContext;
    }

    /**
     * ?Bean
     * 
     * @param name
     *            bean???
     * @return bean
     */
    public static Object getBean(String name) {
        return applicationContext.getBean(name);
    }

    /**
     * ?Bean
     * 
     * @param name
     *            bean???
     * @param requiredType
     *            bean
     * @return bean
     */
    public static <T> T getBean(String name, Class<T> requiredType) {
        return applicationContext.getBean(name, requiredType);
    }

    /**
     * ?Bean
     * 
     * @param requiredType
     *            bean
     * @return bean
     */
    public static <T> T getBean(Class<T> requiredType) {
        return applicationContext.getBean(requiredType);
    }

    /**
     * ?Bean??
     * 
     * @param object
     *            object
     * @param methodName
     *            ??
     * @param arguments
     *            ?
     * @return ?bean??
     * @throws IllegalAccessException
     * @throws InvocationTargetException
     * @throws NoSuchMethodException
     * @throws ClassNotFoundException
     */
    public static Object invokeBeanMethod(String beanName, String methodName, Object[] arguments) {
        try {
            // ?
            MethodInvoker methodInvoker = new MethodInvoker();
            methodInvoker.setTargetObject(SpringUtils.getBean(beanName));
            methodInvoker.setTargetMethod(methodName);

            // ?
            if (arguments != null && arguments.length > 0) {
                methodInvoker.setArguments(arguments);
            }

            // 
            methodInvoker.prepare();

            // 
            return methodInvoker.invoke();
        } catch (ClassNotFoundException e) {
            throw new CoreException(e);
        } catch (NoSuchMethodException e) {
            throw new CoreException(e);
        } catch (InvocationTargetException e) {
            throw new CoreException(e);
        } catch (IllegalAccessException e) {
            throw new CoreException(e);
        }
    }
}